Experiments

What is the main purpose of an experiment?

• Actively producing data and conducting comparisons.

• To observe changes in nature

• Learning about how people live their lives

• Discovering new medical techniques and medications.

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

Experiments that use more than one treatment are generally called:

• multi-track experiments

• Random comparative experiments

• multi-variable experiments

• Double-blind experiments

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

The three principles of experimental design are:

• Control, Randomize, Large Sample Size

• Hypothesis, Experiment, Results

• Control, Bias, Ethics

• Design , Treatments, Comparison

If the statistical significance of an experiment is set at 15%, and the results of the experiment reveal that there is a 12% difference between treatments, what can you conclude?

• The explanatory variable does not cause a change in the response variable.

• The explanatory variable does cause a change in the response variable.

• The experimental hypothesis is true.

• The experimental hypothesis is false.

Subjects who fail to complete an experiment, or give up halfway through the experiment are called:

• non-adheres

• Dropouts

• Confounders

• Outliers

All of the following are elements of a good experimental design except

• A control treatment

• A random sample

• multiple treatments

• A single group of people

Who decides if an experiment is ethical or not?

• The researchers

• The government

• an institutional review board

• the subjects participating in the experiment

What does subject confidentiality NOT protect.

• Subject Name

• Subject personal information

• Subject data

• Experiment Results

What is the difference between an observational study and an experiment?

• Observational studies compare data

• Experiments invoke treatments randomly

• Experiments involve having multiple treatments

• Observational studies have subjects and treatments

Why do we want our experiments to have random elements in them?

• To reduce variability

• To increase variability

• To reduce bias

• To increase bias

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5